亚洲视频免费一区,国产欧美综合一区二区,亚洲国产观看,91精品啪在线观看国产91九色,日本又黄又粗暴的gif动态图含羞,麻豆国产一区二区在线观看,中文字幕在线二区

National

Regional

Taiwan, HK, Macao

Special Coverage

Focus

Society

Profiles

Is there evidence of human-to-human transmission now?

(WHO)
Updated: 2004-02-02 16:14

No. WHO teams in Viet Nam and Thailand are supporting governments in the design and conduct of studies needed to detect the earliest stage of human-to-human transmission. In parallel activities, laboratories in the WHO Global Influenza Surveillance Network are urgently conducting studies on both human and avian viruses, obtained in the current outbreaks. These studies are also expected to shed some light on the origins and characteristics of the currently circulating H5N1 strain.

Moreover, a new virus adapted for efficient human-to-human transmission would spread very rapidly, and health authorities would know very quickly that a completely new virus had emerged. There is no evidence, to date, that this has occurred